That’s a great question!
I see no reason why it wouldn’t work! I don’t actually own my Cloud II USB sound card any more, I sold it when I switched over to the Cloud X instead, and now I have the Alpha’s.
However, when I did own one, I used it with a couple of other headsets just fine! The jack is a standard 3.5mm jack, and the plug on the Alpha’s is standard as well, so it should fit in there just fine! The Alphas aren’t any harder to drive than the Cloud II’s either, so you shouldn’t have any issues with amplification.
So the Alphas should work with it, zero problems.
Sorry to hear that your cable died, that’s lame! That’s one of the reasons I’m so happy the Alphas have a removable/replaceable cable.
Thanks so much for reading, and for the question.